linux-kernel - Re: [PATCH 10/61] gpio: ath79: Use devm_gpiochip_add

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Date:	Mon, 22 Feb 2016 21:13:23 +0100
From:	Alban <albeu@...e.fr>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	Aban Bedel <albeu@...e.fr>, <linus.walleij@...aro.org>,
	<gnurou@...il.com>, <michael.hennerich@...log.com>,
	<corbet@....net>, <rjui@...adcom.com>, <shc_work@...l.ru>,
	<support.opensource@...semi.com>, <swarren@...dotorg.org>,
	<thierry.reding@...il.com>, <bjorn.andersson@...ymobile.com>,
	<a.kesavan@...sung.com>, <gregkh@...uxfoundation.org>,
	<catalin.marinas@....com>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
	<patches@...nsource.wolfsonmicro.com>,
	<bcm-kernel-feedback-list@...adcom.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-tegra@...r.kernel.org>
Subject: Re: [PATCH 10/61] gpio: ath79: Use devm_gpiochip_add_data() for
 gpio registration

On Mon, 22 Feb 2016 19:37:59 +0530
Laxman Dewangan <ldewangan@...dia.com> wrote:

> Use devm_gpiochip_add_data() for GPIO registration.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> Cc: Alban Bedel <albeu@...e.fr>
> ---
>  drivers/gpio/gpio-ath79.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
> index d13dd13..a6aad59 100644
> --- a/drivers/gpio/gpio-ath79.c
> +++ b/drivers/gpio/gpio-ath79.c
> @@ -182,7 +182,7 @@ static int ath79_gpio_probe(struct platform_device *pdev)
>  		ctrl->chip.direction_output = ar934x_gpio_direction_output;
>  	}
>  
> -	err = gpiochip_add_data(&ctrl->chip, ctrl);
> +	err = devm_gpiochip_add_data(&pdev->dev, &ctrl->chip, ctrl);
>  	if (err) {
>  		dev_err(&pdev->dev,
>  			"cannot add AR71xx GPIO chip, error=%d", err);

With the patches already applied to the devel branch a few more changes
will be needed to remove the calls to gpiochip_remove() in the probe
error path and the remove callback.

Alban